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Cobalt Jobber Drill Bits, Fractional, Drill America

Cobalt Jobber Drills Key Features.

  • Manufactured to National Aerospace Standard 907.
  • Made of Heat Resistant Cobalt
  • They Display Higher Red Hardness which Permits Speeds up to 30% Greater than High Speed Steel Drills.
  • Especially Effective in Drilling Tough, High Tensile Strength Materials like PH Stainless Steel, Inconel, and Titanium.
  • The 135° Split Point is Self-Centering and Reduces Thrust. Sizes Smaller than 1/16 Have the 118° Standard Point.

Our Cobalt Drill Bits are Designed to Drill Through the Hardest Materials Such as Stainless Steel, Spring Steel, and Titanium. Includes a 135° Split-Point that will Not Walk or Wander at the Starting Surface. A Combination of High Speed Steel and a Heavy-Duty Web Allows the Bit to Run Cool, Keeping the Cutting Edge Sharper Longer.


Item # Image Description Price
CODB1/16
1/16
1/16" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
  • Sold By The Piece.
  • .0625 Decimal Equivalent.
  • Flute Length = 7/8"
  • Over All Length = 1-7/8"
  • Contact Our Sales Department for Bulk Pricing.
$1.55

CODB5/64
5/64
5/64" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
  • Sold By The Piece.
  • .0781 Decimal Equivalent.
  • Flute Length = 1"
  • Over All Length = 2"
  • Contact Our Sales Department for Bulk Pricing.
$1.55

CODB3/32
3/32
3/32" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
  • Sold By The Piece.
  • .0938 Decimal Equivalent.
  • Flute Length = 1-1/4"
  • Over All Length = 2-1/4"
  • Contact Our Sales Department for Bulk Pricing.
$1.65

CODB7/64
7/64
7/64" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
  • Sold By The Piece.
  • .1094 Decimal Equivalent.
  • Flute Length = 1-1/2"
  • Over All Length = 2-5/8"
  • Contact Our Sales Department for Bulk Pricing.
$1.65

CODB1/8
1/8
1/8" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
  • Sold By The Piece.
  • .1250 Decimal Equivalent.
  • Flute Length = 1-5/8"
  • Over All Length = 2-3/4"
  • Contact Our Sales Department for Bulk Pricing.
$2.25

CODB9/64
9/64
9/64" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
  • Sold By The Piece.
  • .1406 Decimal Equivalent.
  • Flute Length = 1-3/4"
  • Over All Length = 2-7/8"
  • Contact Our Sales Department for Bulk Pricing.
$2.15

CODB5/32
5/32
5/32" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
  • Sold By The Piece.
  • .1562 Decimal Equivalent.
  • Flute Length = 2"
  • Over All Length = 3-1/8"
  • Contact Our Sales Department for Bulk Pricing.
$2.25

CODB11/64
11/64
11/64" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
  • Sold By The Piece.
  • .1719 Decimal Equivalent.
  • Flute Length = 2-1/8"
  • Over All Length = 3-1/4"
  • Contact Our Sales Department for Bulk Pricing.
$2.75

CODB3/16
3/16
3/16" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
  • Sold By The Piece.
  • .1875 Decimal Equivalent.
  • Flute Length = 2-5/16"
  • Over All Length = 3-1/2"
  • Contact Our Sales Department for Bulk Pricing.
$2.50

CODB13/64
13/64
13/64" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
  • Sold By The Piece.
  • .2031 Decimal Equivalent.
  • Flute Length = 2-7/16"
  • Over All Length = 3-5/8"
  • Contact Our Sales Department for Bulk Pricing.
$3.25

CODB7/32
7/32
7/32" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
  • Sold By The Piece.
  • .2188 Decimal Equivalent.
  • Flute Length = 2-1/2"
  • Over All Length = 3-3/4"
  • Contact Our Sales Department for Bulk Pricing.
$3.50

CODB15/64
15/64
15/64" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
  • Sold By The Piece.
  • .2344 Decimal Equivalent.
  • Flute Length = 2-5/8"
  • Over All Length = 3-7/8"
  • Contact Our Sales Department for Bulk Pricing.
$3.50

CODB1/4
1/4
1/4" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
  • Sold By The Piece.
  • .2500 Decimal Equivalent.
  • Flute Length = 2-3/4"
  • Over All Length = 4"
  • Contact Our Sales Department for Bulk Pricing.
$3.95

CODB17/64
17/64
17/64" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
  • Sold By The Piece.
  • .2656 Decimal Equivalent.
  • Flute Length = 2-7/8"
  • Over All Length = 4-1/8"
  • Contact Our Sales Department for Bulk Pricing.
$4.50

CODB9/32
9/32
9/32" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
  • Sold By The Piece.
  • .2812 Decimal Equivalent.
  • Flute Length = 2-15/16"
  • Over All Length = 4-1/4"
  • Contact Our Sales Department for Bulk Pricing.
$4.50

CODB19/64
19/64
19/64" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
  • Sold By The Piece.
  • .2969 Decimal Equivalent.
  • Flute Length = 3-1/16"
  • Over All Length = 4-3/8"
  • Contact Our Sales Department for Bulk Pricing.
$4.50

CODB5/16
5/16
5/16" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
  • Sold By The Piece.
  • .3125 Decimal Equivalent.
  • Flute Length = 3-3/16"
  • Over All Length = 4-1/2"
  • Contact Our Sales Department for Bulk Pricing.
$6.25

CODB21/64
21/64
21/64" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
  • Sold By The Piece.
  • .3281 Decimal Equivalent.
  • Flute Length = 3-5/16"
  • Over All Length = 4-5/8"
  • Contact Our Sales Department for Bulk Pricing.
$6.50

CODB11/32
11/32
11/32" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
  • Sold By The Piece.
  • .3438 Decimal Equivalent.
  • Flute Length = 3-7/16"
  • Over All Length = 4-3/4"
  • Contact Our Sales Department for Bulk Pricing.
$6.75

CODB3/8
3/8
3/8" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
  • Sold By The Piece.
  • .3750 Decimal Equivalent.
  • Flute Length = 3-5/8"
  • Over All Length = 5"
  • Contact Our Sales Department for Bulk Pricing.
$8.75

CODB25/64
25/64
25/64" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
  • Sold By The Piece.
  • .3906 Decimal Equivalent.
  • Flute Length = 3-3/4"
  • Over All Length = 5-1/8"
  • Contact Our Sales Department for Bulk Pricing.
$8.75

CODB13/32
13/32
13/32" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
  • Sold By The Piece.
  • .4062 Decimal Equivalent.
  • Flute Length = 3-7/8"
  • Over All Length = 5-1/4"
  • Contact Our Sales Department for Bulk Pricing.
$8.25

CODB27/64
27/64
27/64" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
  • Sold By The Piece.
  • .4219 Decimal Equivalent.
  • Flute Length = 3-15/16"
  • Over All Length = 5-3/8"
  • Contact Our Sales Department for Bulk Pricing.
$9.75

CODB7/16
7/16
7/16" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
  • Sold By The Piece.
  • .4375 Decimal Equivalent.
  • Flute Length = 4-1/16"
  • Over All Length = 5-1/2"
  • Contact Our Sales Department for Bulk Pricing.
$12.50

CODB15/32
15/32
15/32" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
  • Sold By The Piece.
  • .4688 Decimal Equivalent.
  • Flute Length = 4-5/16"
  • Over All Length = 5-3/4"
  • Contact Our Sales Department for Bulk Pricing.
$13.50

CODB1/2
1/2
1/2" COBALT Heat Resistant Jobber Heavy Duty Drill Bits
  • Sold By The Piece.
  • .5000 Decimal Equivalent.
  • Flute Length = 4-1/2"
  • Over All Length = 6"
  • Contact Our Sales Department for Bulk Pricing.
$14.75